|Spellbook of Carthen Olaren|
|Min Coin: 5s, 67c|
Max Coin: 5s, 97c
Retrieve Carthen Olaren's spellbook from inside the Tower of Bone. The whole quest can be done invis with one minor exception.
When you get into the Tower of Bone you'll see a few level 20 Briarstone Ancients (no arrows). They cannot see invis. If you do not have invis you will likely have to fight all three at the same time.
The tome you are looking for is on the very top of the Tower of Bone. Take the spiral stairs up. On top you'll see two aged tome guardians. They are not attackable. In the center is on a desk the spellbook you are looking for.
When you grab it your invis breaks and the two tome guardians will attack you. They are now level 20 double down arrow.
After you killed them, return to Unlara.